ContentsSafety and Security........................... 59
Occupant safety................................... 60
Air bags .......................................... 61
Seat belts ....................................... 67
Children in the vehicle .................... 70
Blocking of
rear side window operation ............ 82
Panic alarm .......................................... 83
Activating ....................................... 83
Deactivating ................................... 83
Driving safety systems ......................... 84
ABS ................................................ 84
BAS ................................................ 85
ESP ................................................. 86
Anti-theft systems................................ 89
Immobilizer..................................... 89
Anti-theft alarm system .................. 90
Tow-away alarm ............................. 91
Controls in detail............................... 93
Locking and unlocking ......................... 94
SmartKey ....................................... 94
SmartKey with KEYLESS-GO* ........ 99
Opening the doors
from the inside ............................. 105
Opening the trunk ........................ 106
Closing the trunk.......................... 107
Trunk lid emergency release ........ 109
Automatic central locking ............ 110
Locking and unlocking
from the inside ............................. 110
Seats ................................................. 112
Easy-entry/exit feature ................ 112
Removing and installing
front seat head restraints............. 113
Rear seat head restraints ............. 115
Multicontour seat* ....................... 118
Seat heating* ............................... 119
Seat ventilation* .......................... 120
Memory function ............................... 121
Storing positions into memory ..... 122
Recalling positions from memory . 122
Storing exterior rear view
mirror parking position................. 123Lighting ............................................. 124
Exterior lamp switch .................... 124
Combination switch ..................... 129
Cornering fog lamps*
(CLK 320 with
Bi-Xenon* headlamps) ................. 130
Hazard warning flasher ................ 131
Interior lighting ............................ 132
Door entry lamps ......................... 133
Trunk lamp ................................... 133
Instrument cluster ............................. 134
Instrument cluster illumination .... 134
Coolant temperature indicator ..... 135
Trip odometer .............................. 135
Tachometer .................................. 136
Outside temperature indicator ..... 136
11 Introduction
Operator’s Manual
Important notice for California retail
buyers and lessees of Mercedes-Benz automobiles
Under California law you may be entitled to
a replacement of your vehicle or a refund
of the purchase price or lease price, if
Mercedes-Benz USA, LLC and / or its au-
thorized repair or service facilities fail to fix
one or more substantial defects or mal-
functions in the vehicle that are covered by
its express warranty after a reasonable
number of repair attempts. During the pe-
riod of 18 months from original delivery of
the vehicle or the accumulation of
18 000 miles (approx. 29 000 km) on the
odometer of the vehicle, whichever occurs
first, a reasonable number of repair at-
tempts is presumed for a retail buyer or
lessee if one or more of the following oc-
curs: (1) the same substantial defect or mal-
function results in a condition that is
likely to cause death or serious bodily
injury if the vehicle is driven, that de-
fect or malfunction has been subject to
repair two or more times, and you have
directly notified Mercedes-Benz USA,
LLC in writing of the need for its repair,
(2) the same substantial defect or mal-
function of a less serious nature than
category (1) has been subject to repair
four or more times and you have direct-
ly notified us in writing of the need for
its repair, or(3) the vehicle is out of service by reason
of repair of the same or different sub-
stantial defects or malfunctions for a
cumulative total of more than
30 calender days.
Written notification should be sent to us,
not a dealer, at Mercedes-Benz USA, LLC,
Customer Assistance Center,
One Mercedes Drive, Montvale,
NJ 07645-0350.
25 At a glance
Instrument cluster
Item
Page
1
LLeft turn signal indi-
cator lamp
51
2
vESP warning lamp
358
3
Speedometer
4
Multifunction display
137
5
lDistance warning
lamp
Warning lamp without func-
tion. It illuminates with the
ignition on. It should go out
when the engine is running.
6
KRight turn signal indi-
cator lamp
51
7
Coolant temperature indi-
cator with:
135
•
Coolant temperature
warning lamp
357,
376
Item
Page
8
Tachometer with:
136
1Supplemental
restraint system
indicator lamp
359,
386
-Antilock Brake Sys-
tem (ABS) warning
lamp
354
386
AHigh beam headlamp
indicator lamp
129
BLow beam headlamp
indicator lamp
129
9
Main odometer with:
Gear selector lever posi-
tion
166
Program mode
170
Item
Page
a
Clock with:
151
;Brake warning lamp,
USA only
355
3Brake warning lamp,
Canada only?Engine malfunction
indicator lamp,
USA only
356
±Engine malfunction
indicator lamp,
Canada only
356
b
Fuel display with:AFuel reserve warning
lamp
359
c
Reset button for:
Resetting trip odometer
135
Adjusting instrument
cluster illumination
134
Confirming new time set-
tings
151
135 Controls in detail
Instrument cluster
Coolant temperature indicator
The coolant temperature indicator is on
the right side in the instrument cluster
(page 24).
During severe operating conditions, e.g.
stop-and-go traffic, the coolant tempera-
ture may rise close to 120°C.
The engine should not be operated with
the coolant temperature above 120°C.
Doing so may cause serious engine
damage which is not covered by the
Mercedes-Benz Limited Warranty.
Trip odometer
Make sure you are viewing the stan-
dard display in the multifunction dis-
play (
page 142).
If it is not displayed, press buttonè
orÿ on the multifunction steering
wheel repeatedly until the standard dis-
play appears (
page 138).
Press and hold reset button on the in-
strument cluster (
page 134) until the
trip odometer is reset.
Warning!
G
Driving when your engine is badly over-
heated can cause some fluids which
may have leaked into the engine com-
partment to catch fire. You could be se-
riously burned.
Steam from an overheated engine can
cause serious burns and can occur just
by opening the hood. Stay away from
the engine if you see or hear steam com-
ing from it.
Turn off the engine, get out of the vehicle
and do not stand near the vehicle until the
engine has cooled down.
iExcessive coolant temperature triggers
a warning in the multifunction display
(page 376) and the red coolant warn-
ing lamp in the instrument cluster
comes on (
page 357).
137 Controls in detail
Control system
Control system
The control system is activated as soon as
the SmartKey in the starter switch is
turned to position1 or as soon as the
KEYLESS-GO* start/stop button is in
position1. The control system enables you
to
call up information about your vehicle
change vehicle settings
For example, you can use the control sys-
tem to find out when your vehicle is next
due for service, to set the language for
messages in the instrument cluster dis-
play, and much more.
The control system relays information to
the multifunction display.
Multifunction display
1Outside temperature
2Trip odometer
3Automatic transmission program mode
4Main odometer
5Current gear selector lever position
For more information on menus displayed
in the multifunction display, see “Menus”
(page 140).
iThe displays for the audio systems (ra-
dio, CD player) will appear in English,
regardless of the language selected.
Warning!
G
A driver’s attention to the road and traffic
conditions must always be his /her primary
focus when driving.
For your safety and the safety of others,
selecting features through the multifunction
steering wheel should only be done by the
driver when traffic and road conditions
permit it to be done safely.
Bear in mind that at a speed of just 30 mph
(approximately 50 km/h), your vehicle is
covering a distance of 44 feet (approxi-
mately 14 m) every second.
142 Controls in detailControl systemStandard display menu
In the standard display, the outside tem-
perature and the trip odometer are shown
in the multifunction display.1Outside temperature
2Trip odometer
If you see another display, press
buttonè orÿ repeatedly until the
standard display appears.
You can select the functions in the stan-
dard display menu with buttonk
orj.
The following functions are available:Display digital speedometer
Press buttonj ork repeatedly
until the digital speedometer appears
in the multifunction display.
The current vehicle speed is shown in
the multifunction display and the sta-
tus line appears.
1Digital Speedometer
2Status line with outside temperature
3Trip odometer
iThe headings used in the menus table
are designed to facilitate navigation
within the system and are not neces-
sarily identical to those shown in the
control system displays.
The first function displayed in each
menu will automatically show you
which part of the system you are in.iYou can have the digital speedometer
displayed instead of the outside tem-
perature in the standard display. You
can select the setting in the submenu Instr. cluster
via the function
Basic
display
(page 151).
Function
Page
Call up digital speedometer
142
Call up maintenance service
display
345
Check engine oil level
310
iYou can have the digital speedometer
displayed instead of the outside tem-
perature in the status line. You can se-
lect the setting in the submenu
Instr.
cluster
via the function
Status line
display
(page 150).
149 Controls in detail
Control system
Instrument cluster submenu
Access the
Instr. cluster
submenu via
the
Settings
menu. Use the
Instr. clus-
ter
submenu to change the instrument
cluster display settings.
The following functions are available:Selecting temperature display mode
Move the selection marker with
buttonæ orç to the Instr. cluster
submenu.
Press buttonj ork repeatedly
until the message
Temp. indicator
appears in the multifunction display.
The selection marker is on the current
setting.
Press buttonæ orç to set tem-
perature unit to
°C (degrees Celsius)
or
°F (degrees Fahrenheit).Selecting speedometer display mode
Move the selection marker with
buttonæ orç to the Instr. cluster
submenu.
Press buttonj ork repeatedly
until the message
Display unit
Speed-/odometer appears in the
multifunction display.
The selection marker is on the current
setting.
Press buttonæ or ç to set
speedometer unit to
km or
miles
.
Function
Page
Selecting temperature display
mode
149
Selecting speedometer display
mode
149
Selecting language
150
Selecting display (speed display
or outside temperature) for
status display
150
Selecting display (speed display
or outside temperature) for
standard display
151
477 Index
Parking brake 374
SmartKey with KEYLESS-GO* 381
Steering gear oil level 387
Sunroof* 388
Symbol messages 373–388
Tele Aid 386
Telephone* 388
Text messages 364–372
Trunk 388
Washer fluid 388
Multifunction
steering wheel 26, 138, 458
Buttons 138N
Navigation system
Operating 144
See separate COMAND*
operating instructions
Night security illumination 127
Normal occupant weight 339
Nubuck leather upholstery (CLK 55 AMG)
Cleaning 352
O
Occupant Classification System see OCS
Occupant distribution 339
Occupant safety 60
Air bags 61
Children and air bags 62
Children in the vehicle 70
Fastening the seat belts 43
Front passenger front
air bag off indicator lamp 77, 360
Infant and child restraint systems 70
LATCH child seat anchors 80
OCS 73
Seat belts 43, 64OCS 73, 458
Self-test 78
Odometer, main 25
Oil
Adding 312
Checking level 310
Consumption 309
Filler cap 312
Filler neck 312
Viscosity 456
Oil level
Checking 307
One-touch gearshifting 167
Canceling gear range limit 167
Downshifting 167
Upshifting 167